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Rafael Monnerat
slapos.buildout
Commits
76f8a02b
Commit
76f8a02b
authored
Aug 26, 2012
by
Jim Fulton
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removed failed attempt at isolation via -S
parent
4d5f3f33
Changes
6
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6 changed files
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6 additions
and
297 deletions
+6
-297
bootstrap/bootstrap.py
bootstrap/bootstrap.py
+0
-26
dev.py
dev.py
+1
-44
src/zc/buildout/buildout.py
src/zc/buildout/buildout.py
+1
-10
src/zc/buildout/easy_install.py
src/zc/buildout/easy_install.py
+2
-38
src/zc/buildout/isolation.txt
src/zc/buildout/isolation.txt
+0
-177
src/zc/buildout/tests.py
src/zc/buildout/tests.py
+2
-2
No files found.
bootstrap/bootstrap.py
View file @
76f8a02b
...
...
@@ -53,25 +53,6 @@ parser.add_option("-c", None, action="store", dest="config_file",
options
,
args
=
parser
.
parse_args
()
######################################################################
# handle -S
def
normpath
(
p
):
if
p
.
endswith
(
os
.
path
.
sep
):
return
p
[:
-
1
]
else
:
return
p
nosite
=
'site'
not
in
sys
.
modules
if
nosite
:
# They've asked not to import site. Cool, but distribute is going to
# import it anyway, so we're going to have to clean up. :(
initial_paths
=
set
(
map
(
normpath
,
sys
.
path
))
import
site
to_remove
=
set
(
map
(
normpath
,
sys
.
path
))
-
initial_paths
else
:
to_remove
=
()
######################################################################
# load/install distribute
...
...
@@ -102,13 +83,6 @@ except ImportError:
if
path
not
in
pkg_resources
.
working_set
.
entries
:
pkg_resources
.
working_set
.
add_entry
(
path
)
# Clean up
if
nosite
and
'site'
in
sys
.
modules
:
del
sys
.
modules
[
'site'
]
sys
.
path
[:]
=
[
p
for
p
in
sys
.
path
[:]
if
normpath
(
p
)
not
in
to_remove
]
######################################################################
# Install buildout
...
...
dev.py
View file @
76f8a02b
...
...
@@ -26,8 +26,6 @@ for d in 'eggs', 'develop-eggs', 'bin', 'parts':
if
os
.
path
.
isdir
(
'build'
):
shutil
.
rmtree
(
'build'
)
nosite
=
'site'
not
in
sys
.
modules
######################################################################
# Make sure we have a relatively clean environment
try
:
...
...
@@ -37,41 +35,7 @@ except ImportError:
else
:
raise
SystemError
(
"Buildout development with a pre-installed setuptools or "
"distribute is not supported.%s"
%
((
not
nosite
)
and
' Try running with -S option to Python.'
or
''
))
######################################################################
# handle -S
def
normpath
(
p
):
if
p
.
endswith
(
os
.
path
.
sep
):
return
p
[:
-
1
]
else
:
return
p
if
nosite
:
# They've asked not to import site. Cool, but distribute is going to
# import it anyway, so we're going to have to clean up. :(
initial_paths
=
set
(
map
(
normpath
,
sys
.
path
))
import
site
to_remove
=
set
(
map
(
normpath
,
sys
.
path
))
-
initial_paths
else
:
to_remove
=
()
######################################################################
# Make sure we have a relatively clean environment
try
:
import
pkg_resources
,
setuptools
except
ImportError
:
pass
else
:
message
=
(
"Buildout development with a pre-installed setuptools or "
"distribute is not supported."
)
if
not
nosite
:
message
+=
' Try running with -S option to Python.'
raise
SystemError
(
message
)
"distribute is not supported."
)
######################################################################
# Install distribute
...
...
@@ -87,13 +51,6 @@ ez['use_setuptools'](to_dir='eggs', download_delay=0)
import
pkg_resources
# Clean up
if
nosite
and
'site'
in
sys
.
modules
:
del
sys
.
modules
[
'site'
]
sys
.
path
[:]
=
[
p
for
p
in
sys
.
path
[:]
if
normpath
(
p
)
not
in
to_remove
]
######################################################################
# Install buildout
...
...
src/zc/buildout/buildout.py
View file @
76f8a02b
...
...
@@ -14,11 +14,8 @@
"""Buildout main script
"""
# handle -S
import
zc.buildout.easy_install
no_site
=
zc
.
buildout
.
easy_install
.
no_site
from
zc.buildout.rmtree
import
rmtree
import
zc.buildout.easy_install
try
:
from
hashlib
import
md5
...
...
@@ -903,8 +900,6 @@ class Buildout(DictMixin):
args
.
insert
(
1
,
'-W'
)
if
not
__debug__
:
args
.
insert
(
0
,
'-O'
)
if
no_site
:
args
.
insert
(
0
,
'-S'
)
args
.
insert
(
0
,
zc
.
buildout
.
easy_install
.
_safe_arg
(
sys
.
executable
))
os
.
execv
(
sys
.
executable
,
args
)
...
...
@@ -928,8 +923,6 @@ class Buildout(DictMixin):
args
=
sys
.
argv
[:]
if
not
__debug__
:
args
.
insert
(
0
,
'-O'
)
if
no_site
:
args
.
insert
(
0
,
'-S'
)
args
.
insert
(
0
,
sys
.
executable
)
sys
.
exit
(
subprocess
.
call
(
args
))
...
...
@@ -991,8 +984,6 @@ class Buildout(DictMixin):
__file__
=
setup
,
)).
encode
())
args
=
[
sys
.
executable
,
tsetup
]
+
args
if
no_site
:
args
.
insert
(
1
,
'-S'
)
zc
.
buildout
.
easy_install
.
call_subprocess
(
args
)
finally
:
os
.
close
(
fd
)
...
...
src/zc/buildout/easy_install.py
View file @
76f8a02b
...
...
@@ -18,29 +18,10 @@ It doesn't install scripts. It uses distribute and requires it to be
installed.
"""
import
os
import
sys
######################################################################
# handle -S
def
normpath
(
p
):
if
p
.
endswith
(
os
.
path
.
sep
):
return
p
[:
-
1
]
else
:
return
p
no_site
=
'site'
not
in
sys
.
modules
if
no_site
:
initial_paths
=
set
(
map
(
normpath
,
sys
.
path
))
import
site
sys
.
path
[:]
=
[
p
for
p
in
sys
.
path
if
normpath
(
p
)
in
initial_paths
]
#
######################################################################
import
distutils.errors
import
glob
import
logging
import
os
import
pkg_resources
import
py_compile
import
re
...
...
@@ -49,6 +30,7 @@ import setuptools.command.setopt
import
setuptools.package_index
import
shutil
import
subprocess
import
sys
import
tempfile
import
zc.buildout
import
zipimport
...
...
@@ -291,8 +273,6 @@ class Installer:
path
=
distribute_loc
args
=
[
sys
.
executable
,
'-c'
,
_easy_install_cmd
,
'-mZUNxd'
,
tmp
]
if
no_site
:
args
.
insert
(
1
,
'-S'
)
level
=
logger
.
getEffectiveLevel
()
if
level
>
0
:
args
.
append
(
'-q'
)
...
...
@@ -839,9 +819,6 @@ def develop(setup, dest,
if
log_level
<
logging
.
DEBUG
:
logger
.
debug
(
"in: %r
\
n
%s"
,
directory
,
' '
.
join
(
args
))
if
no_site
:
args
.
insert
(
1
,
'-S'
)
call_subprocess
(
args
)
return
_copyeggs
(
tmp3
,
dest
,
'.egg-link'
,
undo
)
...
...
@@ -1019,8 +996,6 @@ def _script(module_name, attrs, path, dest, arguments, initialization, rsetup):
dest
+=
'-script.py'
python
=
_safe_arg
(
sys
.
executable
)
if
no_site
:
python
+=
' -S'
contents
=
script_template
%
dict
(
python
=
python
,
...
...
@@ -1043,8 +1018,6 @@ def _distutils_script(path, dest, script_content, initialization, rsetup):
original_content
=
''
.
join
(
lines
[
1
:])
python
=
_safe_arg
(
sys
.
executable
)
if
no_site
:
python
+=
' -S'
contents
=
distutils_script_template
%
dict
(
python
=
python
,
...
...
@@ -1126,8 +1099,6 @@ def _pyscript(path, dest, rsetup):
dest
+=
'-script.py'
python
=
_safe_arg
(
sys
.
executable
)
if
no_site
:
python
+=
' -S'
contents
=
py_script_template
%
dict
(
python
=
python
,
...
...
@@ -1197,15 +1168,8 @@ import sys
sys.path.insert(0, %(setupdir)r)
sys.path.insert(0, %(distribute)r)
nosite = 'site' not in sys.modules
original_path = sys.path[:]
import os, setuptools
if nosite and ('site' in sys.modules):
sys.path[:] = original_path
del sys.modules['site']
__file__ = %(__file__)r
os.chdir(%(setupdir)r)
...
...
src/zc/buildout/isolation.txt
deleted
100644 → 0
View file @
4d5f3f33
Isolation
=========
When developing applications, we recommended that you work with a
minimal Python environment and let buildout install needed
dependencies. If you share a Python environment with other
applications [#simple]_, you're likely to have unexpected
interactions with the other applications, through extra modules or
module version clashes.
There are a number of ways to achive isolation from other
applications:
1. Use a "clean" Python installation that doesn't contain any
non-standard modules.
2. Use a 'virtual environment
<http://pypi.python.org/pypi/virtualenv>'_ that wraps a Python
installation in a way that hides 3rd-party modules. `This is built
into Python 3.3 <http://docs.python.org/dev/library/venv.html>`_
3. Use the -S Python option when bootstrapping buildout. This will
bypass the normal execution of the Python site.py file, which is
what usually causes directories containing third-party modules to be
added to the Python path on most platforms [#macos]_.
If the -S option is used when bootstrapping buildout, then it will
be remembered by buildout and any scripts generated by buildout
will also use the -S option.
The first option works best in our opinion because, in addition to
isolating you from extra third-party libraries, it protects you from
other changes that a preexisting build might have, such as missing
standard libraries or non-standard Python build options.
This document tests the 3rd option.
First, the non-isolated case:
>>> sample_buildout = tmpdir('sample')
>>> cd(sample_buildout)
>>> import sys
>>> print_('X' +
... system("%s %s init demo" % (sys.executable, bootstrap_py)),
... end='\n===')
... # doctest: +ELLIPSIS
X...
If we look at the scripts generated, we see that the -S option is **not**
provided to the Python executable:
>>> cat('bin', 'buildout') # doctest: +ELLIPSIS
#!/usr/local/bin/python2.7
...
>>> cat('bin', 'demo') # doctest: +ELLIPSIS
#!/usr/local/bin/python2.7
...
>>> cat('bin', 'py') # doctest: +ELLIPSIS
#!/usr/local/bin/python2.7
...
The -S option is also not used when invoking setup scripts.
>>> mkdir('proj')
>>> write('proj', 'setup.py', """
... from distutils.core import setup
... import sys
... sys.stdout.write('site: %s\\n' % ('site' in sys.modules))
... setup(name='hassite')
... """)
>>> print_(system(join('bin', 'buildout')+' setup proj sdist'))
... # doctest: +ELLIPSIS
Running setup script 'proj/setup.py'.
site: True
...
>>> write('buildout.cfg', """
... [buildout]
... parts = egg
... find-links = %s
... [egg]
... recipe = zc.recipe.egg
... eggs = hassite
... """ % join('proj', 'dist'))
>>> print_(system(join('bin', 'buildout')))
... # doctest: +ELLIPSIS
Uninstalling py.
Installing egg.
Getting distribution for 'hassite'.
site: True
...
>>> write('buildout.cfg', """
... [buildout]
... parts =
... develop = proj
... """)
>>> print_(system(join('bin', 'buildout')))
... # doctest: +ELLIPSIS
Develop: '/sample/proj'
site: True
...
Now, we'll re-bootstrap with -S, to get isolation:
>>> remove('buildout.cfg')
>>> remove('eggs')
>>> print_('X' +
... system("%s -S %s init demo" % (sys.executable, bootstrap_py)),
... end='\n===')
... # doctest: +ELLIPSIS
X...
If we look at the scripts generated, se see that the -S option is
provided to the Python executable:
>>> cat('bin', 'buildout') # doctest: +ELLIPSIS
#!/usr/local/bin/python2.7 -S
...
>>> cat('bin', 'demo') # doctest: +ELLIPSIS
#!/usr/local/bin/python2.7 -S
...
>>> cat('bin', 'py') # doctest: +ELLIPSIS
#!/usr/local/bin/python2.7 -S
...
The -S option is also used when invoking setup scripts.
>>> print_(system(join('bin', 'buildout')+' setup proj sdist'))
... # doctest: +ELLIPSIS
Running setup script 'proj/setup.py'.
site: False
...
>>> write('buildout.cfg', """
... [buildout]
... parts = egg
... find-links = %s
... [egg]
... recipe = zc.recipe.egg
... eggs = hassite
... """ % join('proj', 'dist'))
>>> print_(system(join('bin', 'buildout')))
... # doctest: +ELLIPSIS
Uninstalling py.
Installing egg.
Getting distribution for 'hassite'.
site: False
...
>>> write('buildout.cfg', """
... [buildout]
... parts =
... develop = proj
... """)
>>> print_(system(join('bin', 'buildout')))
... # doctest: +ELLIPSIS
Develop: '/sample/proj'
site: False
...
.. [#simple] It's worth noting that system Python builds can make
simple applications easier to build, as hard-to-build extension
modules are already installed or can be easily installed using
system packaging tools.
.. [#macos] On Mac OS X, there are some directories containing
3rd-party libraries that are added to the Python path regardless of
whether site.py is loaded. Still, even on Mac OS X, use of the -S
option prevents some 3rd-party modules from being added to the
Python path.
src/zc/buildout/tests.py
View file @
76f8a02b
...
...
@@ -3109,11 +3109,11 @@ def test_suite():
'testing_bugfix.txt'),
]
# adding bootstrap.txt
and isolation.txt
doctest to the suite
# adding bootstrap.txt doctest to the suite
# only if bootstrap.py is present
if os.path.exists(bootstrap_py):
test_suite.append(doctest.DocFileSuite(
'bootstrap.txt',
'isolation.txt',
'bootstrap.txt',
setUp=bootstrapSetup,
tearDown=zc.buildout.testing.buildoutTearDown,
checker=renormalizing.RENormalizing([
...
...
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